LP3872ES-5.0/NOPB Equivalent & Substitute Parts

Part Overview

The LP3872ES-5.0/NOPB is a linear voltage regulator IC from Texas Instruments, classified as a Power Management (PMIC) component. It delivers a fixed positive 5V output at 1.5A maximum current in a surface-mount TO-263 (DDPAK-5) package. The device is Active status and ROHS3 compliant, making it suitable for applications requiring regulated 5V power distribution with integrated protection features. Substitute parts are identified when equivalent electrical performance and mechanical compatibility are maintained across the same package and output specifications.

Key Parameters

Parameter	Value
Manufacturer Part Number	LP3872ES-5.0/NOPB
Manufacturer	Texas Instruments
Category	Power Management (PMIC)
Package / Case	TO-263-6, D2PAK (5 Leads + Tab)
Voltage - Output (Fixed)	5V
Current - Output	1.5A
Voltage - Input (Max)	7V
Voltage Dropout (Max)	0.55V @ 1.5A
Operating Temperature	-40°C ~ 125°C
Product Status	Active
RoHS Status	ROHS3 Compliant
Mounting Type	Surface Mount

Substitute Part Grouping Explanation

Substitute parts for the LP3872ES-5.0/NOPB are qualified based on the following criteria:

Electrical Equivalence Requirements:

Fixed positive 5V output voltage
1.5A maximum output current capability
Maximum input voltage of 7V
Identical output configuration and control features (Enable function)
Equivalent protection features (Over Current, Over Temperature, Short Circuit)
Operating temperature range of -40°C ~ 125°C

Mechanical Compatibility Requirements:

Surface-mount packaging in TO-263 (DDPAK-5) configuration
Identical pin count and lead structure
Same supplier device package designation

Compliance Requirements:

ROHS3 compliance
Moisture Sensitivity Level (MSL) 3 (168 Hours)
Active product status

The identified substitutes LP3852ES-5.0/NOPB and LP3855ES-5.0/NOPB meet all electrical, mechanical, and compliance criteria for direct replacement in applications using the LP3872ES-5.0/NOPB.

Parameter Comparison

Parameter	LP3872ES-5.0/NOPB	LP3852ES-5.0/NOPB	LP3855ES-5.0/NOPB
Manufacturer	Texas Instruments	Texas Instruments	Texas Instruments
Category	Power Management (PMIC)	Power Management (PMIC)	Power Management (PMIC)
Package / Case	TO-263-6, D2PAK (5 Leads + Tab)	TO-263-6, D2PAK (5 Leads + Tab)	TO-263-6, D2PAK (5 Leads + Tab)
Voltage - Output (Fixed)	5V	5V	5V
Current - Output	1.5A	1.5A	1.5A
Voltage - Input (Max)	7V	7V	7V
Voltage Dropout (Max)	0.55V @ 1.5A	0.38V @ 1.5A	0.38V @ 1.5A
Current - Quiescent (Iq)	5 mA	3 mA	3 mA
Current - Supply (Max)	15 mA	10 mA	10 mA
PSRR	73dB ~ 57dB (120Hz)	73dB ~ 57dB (120Hz)	73dB ~ 57dB (120Hz)
Control Features	Enable	Enable	Enable
Protection Features	Over Current, Over Temperature, Short Circuit	Over Current, Over Temperature, Short Circuit	Over Current, Over Temperature, Short Circuit
Operating Temperature	-40°C ~ 125°C	-40°C ~ 125°C	-40°C ~ 125°C
Product Status	Active	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Mounting Type	Surface Mount	Surface Mount	Surface Mount
MSL	3 (168 Hours)	3 (168 Hours)	3 (168 Hours)

Engineering Selection Recommendations

All three parts—LP3872ES-5.0/NOPB, LP3852ES-5.0/NOPB, and LP3855ES-5.0/NOPB—are Active status products from Texas Instruments with ROHS3 compliance and identical MSL ratings. They share the same output voltage, current rating, input voltage maximum, package configuration, and protection feature set.

The LP3852ES-5.0/NOPB and LP3855ES-5.0/NOPB offer improved performance characteristics with lower dropout voltage (0.38V versus 0.55V) and reduced quiescent current (3 mA versus 5 mA), resulting in lower power dissipation and improved efficiency in battery-powered or thermally constrained applications.

Selection between these parts depends on application-specific requirements for dropout voltage and quiescent current performance. All three are mechanically and electrically interchangeable within the specified electrical operating parameters.

Frequently Asked Questions (FAQ)

Q: Can LP3852ES-5.0/NOPB or LP3855ES-5.0/NOPB be used as direct replacements for LP3872ES-5.0/NOPB?

A: Yes. Both substitute parts maintain identical output voltage (5V), output current (1.5A), input voltage maximum (7V), package configuration (TO-263 DDPAK-5), operating temperature range (-40°C ~ 125°C), and protection features. They are mechanically and electrically compatible for direct PCB substitution.

Q: What is the difference between the three parts?

A: The primary differences are dropout voltage and quiescent current. LP3872ES-5.0/NOPB has 0.55V dropout and 5 mA quiescent current. LP3852ES-5.0/NOPB and LP3855ES-5.0/NOPB both have 0.38V dropout and 3 mA quiescent current, offering improved efficiency.

Q: Are all three parts in the same package?

A: Yes. All three use the TO-263-6 (D2PAK with 5 Leads + Tab) surface-mount package with identical pin configuration and lead structure.

Q: Do all parts meet the same compliance standards?

A: Yes. All three are ROHS3 compliant with MSL 3 (168 Hours) rating and Active product status from Texas Instruments.

Q: Which part should I select for a new design?

A: Selection is based on application requirements. For applications where lower power dissipation and improved efficiency are priorities, LP3852ES-5.0/NOPB or LP3855ES-5.0/NOPB are preferred due to lower dropout voltage and quiescent current. For existing designs using LP3872ES-5.0/NOPB, any of the three parts provide equivalent functionality.

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